之前在 在iOS虚拟键盘上添加动态隐藏按钮一文中描叙了关于键盘上添加动态按钮的操作，发现键盘上的按钮显示出来的时候很僵硬，此处做了改进，添加了动画过渡，更换了图片，能够让人感觉按钮是随着键盘的动画显示而显示，随着键盘的动画退出而退出，看上去更加流畅些；

成都创新互联公司服务项目包括孝昌网站建设、孝昌网站制作、孝昌网页制作以及孝昌网络营销策划等。多年来，我们专注于互联网行业，利用自身积累的技术优势、行业经验、深度合作伙伴关系等，向广大中小型企业、政府机构等提供互联网行业的解决方案，孝昌网站推广取得了明显的社会效益与经济效益。目前，我们服务的客户以成都为中心已经辐射到孝昌省份的部分城市，未来相信会继续扩大服务区域并继续获得客户的支持与信任！

效果图:

  

  

- (void)viewDidLoad
{
    NSLog(@"%@",NSStringFromSelector(_cmd));
    [super viewDidLoad];
	exitButton = [UIButton buttonWithType:UIButtonTypeCustom];
    [exitButton setImage:[UIImage p_w_picpathNamed:@"down.png"] forState:UIControlStateNormal];
    CGRect exitBtFrame = CGRectMake(self.view.frame.size.width-48, self.view.frame.size.height , 48.0f, 30.0f);
    
    [exitButton setFrame:exitBtFrame];
      
   
    [self.view addSubview:exitButton];

    [[NSNotificationCenter defaultCenter] addObserver:self selector:@selector(handleKeyboardDidShow:) name:UIKeyboardWillShowNotification object:nil];  
    
     [[NSNotificationCenter defaultCenter] addObserver:self selector:@selector(handleKeyboardWillHide:) name:UIKeyboardWillHideNotification object:nil];
}

- (void)handleKeyboardDidShow:(NSNotification *)notification 
{
    NSLog(@"%@",NSStringFromSelector(_cmd));
    NSDictionary *info = [notification userInfo];
    NSLog(@"-->info:%@",info);
    CGRect keyboardFrame;
    [[info objectForKey:UIKeyboardFrameEndUserInfoKey] getValue:&keyboardFrame];
    CGSize kbSize = [[info objectForKey:UIKeyboardFrameEndUserInfoKey]CGRectValue].size;
    NSValue *animationDurValue = [info objectForKey:UIKeyboardAnimationDurationUserInfoKey];
    NSTimeInterval animationDuration;
//    copy value
    [animationDurValue getValue:&animationDuration];
    
//    让键盘弹起的时候添加一个动画
    [UIView beginAnimations:@"animal" context:nil];
    [UIView setAnimationDuration:animationDuration];
    
    CGFloat distanceToMove = kbSize.height;
    NSLog(@"---->动态键盘高度:%f",distanceToMove);
    [self adjustPanelsWithKeyBordHeight:distanceToMove];
    [UIView commitAnimations];
    exitButton.hidden=NO;
    [exitButton addTarget:self action:@selector(CancelBackKeyboard:) forControlEvents:UIControlEventTouchDown];
    

}

- (void)handleKeyboardWillHide:(NSNotification *)notification 
{
    NSLog(@"%@",NSStringFromSelector(_cmd));

    NSDictionary *info = [notification userInfo];
    CGRect keyboardFrame;
    [[info objectForKey:UIKeyboardFrameEndUserInfoKey] getValue:&keyboardFrame];
    NSValue *animationDurValue = [info objectForKey:UIKeyboardAnimationDurationUserInfoKey];
    NSTimeInterval animationDuration;
    //   把animationDurvalue 值拷贝到animationDuration中
    [animationDurValue getValue:&animationDuration];
    
    [UIView beginAnimations:@"animal" context:nil];
    [UIView setAnimationDuration:animationDuration];

    if (exitButton) {

        CGRect exitBtFrame = CGRectMake(self.view.frame.size.width - 48, self.view.frame.size.height, 48.0f, 30.0f);
        exitButton.frame = exitBtFrame;
        [self.view addSubview:exitButton];

    }
    [UIView commitAnimations];
    
}

-(void)adjustPanelsWithKeyBordHeight:(float) height
{
   
    NSLog(@"%@",NSStringFromSelector(_cmd));
    if (exitButton) {

       CGRect exitBtFrame = CGRectMake(self.view.frame.size.width - 48, self.view.frame.size.height - height-30, 48.0f, 30.0f);
        exitButton.frame = exitBtFrame;

        [self.view addSubview:exitButton];


    }
    
    
}

-(void)CancelBackKeyboard:(id)sender
{
    NSLog(@"%@",NSStringFromSelector(_cmd));
    
    [textField resignFirstResponder];
    
}

- (void)viewDidUnload
{
    [self setTextField:nil];
    exitButton=nil;
    [super viewDidUnload];
    
    // Release any retained subviews of the main view.
}

- (BOOL)shouldAutorotateToInterfaceOrientation:(UIInterfaceOrientation)interfaceOrientation
{
    return (interfaceOrientation != UIInterfaceOrientationPortraitUpsideDown);
}

- (void)dealloc {
    [textField release];
    [exitButton release];
    [[NSNotificationCenter defaultCenter] removeObserver:self];
    [super dealloc];
}

源码:http://download.csdn.net/detail/duxinfeng2010/4858444

 

另外有需要云服务器可以了解下创新互联scvps.cn，海内外云服务器15元起步，三天无理由+7*72小时售后在线，公司持有idc许可证，提供“云服务器、裸金属服务器、高防服务器、香港服务器、美国服务器、虚拟主机、免备案服务器”等云主机租用服务以及企业上云的综合解决方案，具有“安全稳定、简单易用、服务可用性高、性价比高”等特点与优势，专为企业上云打造定制，能够满足用户丰富、多元化的应用场景需求。

分享名称：iOS虚拟键盘上添加动态按钮-创新互联
当前URL：http://cdweb.net/article/dcedho.html